Q2: Hazardous materials is any material that can harm people, other living organisms, or the environment. Hazardous waste is waste that are dangerous or potentially harmful to human health or the environment.
Q4: Types of infections can be bacteria, viruses, fungi, protozoa, parasites, and prions.
Q5: Stress is your body's reaction to challenge or demand. Some effects of stress can either be emotional exhaustion and even physical exhaustion, damage, and illness.
Those are the only questions i know,, hopefully this helps a little bit!
Dietary supplements can be used to improve physical performance during exercise, build muscle, change body composition and delay fatigue. If used unwisely, however, they can adversely affect overall health.this will help this sports. i would recommend giving picky eaters pregnent women and the elderly mulitvitamins. healthy people just vitamin D and C.